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특허 상세정보

Rod-like probe for the capacitive measurement of the level in a container

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01F-023/26   
미국특허분류(USC) 73/304C ; 361/284 ; 324/61P
출원번호 US-0283209 (1981-07-14)
우선권정보 DE-3029352 (1980-08-01)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 35  인용 특허 : 1
초록

Disclosed is a capacitance level measuring device comprised of a container whose level is to be measured and a probe inserted into and spaced from the container. The capacitance between the probe and container varies in relation to the level in the container. A capacitance measuring circuit determines the capacitance between the probe and container and thus indicates the level in the container. The integrity of the probe is verified by constructing the probe so as to include it in a series circuit, as well as the capacitance measuring circuit, and a lack...

대표
청구항

A capacitance level measuring arrangement for the capacitive measurement of the level in a container, said arrangement comprising: a probe extending from the container interior to the container exterior, the probe forming one electrode and the container the other electrode of a capacitor whose capacitance depends on the level in the container, wherein the probe includes two electrical conductors insulated from each other which are electrically connected together at the ends of the conductors facing the container interior and at the ends of which remote f...

이 특허를 인용한 특허 피인용횟수: 35

  1. Clark Frederick L. (Plano TX) Hendrick Kendall B. (Southlake TX) Martin Richard R. (Irving TX) Moore Larry W. (Plano TX) Raymoure William J. (Lake Bluff IL) Schrier Paul R. (Carrollton TX) Walker Edn. Apparatus and method for washing clinical apparatus. USP1997035610069.
  2. Larrabee David A. (Downingtown PA) Wyler John S. (Berwyn PA) Ahmad Farid (Collegeville PA). Apparatus for measuring the level of a liquid in a tank. USP1997025602333.
  3. Walker Donny R. (Coppell TX) Vaught James A. (Euless TX) Hills David B. (Plano TX). Automated liquid level sensing system. USP1997055627522.
  4. Cunning, Hugh; Williams, Graham; Odedra, Rajesh; Kanjolia, Ravi. Bubbler for the transportation of substances by a carrier gas. USP2012098272626.
  5. Clark Frederic L. (Plano TX) Hendrick Kendall B. (Southlake TX) Martin Richard R. (Irving TX) Moore Larry W. (Plano TX) Raymoure William J. (Lake Blluff IL) Schrier Paul R. (Carrollton TX) Walker Edn. Cap actuator for opening and closing a container. USP1996115578494.
  6. Wells Paul (Newberg OR). Capacitive fluid level sensor. USP1991085042299.
  7. Muzzo, Paul; Schmitz, Isabelle. Capacitive level gauge assembly for a container of pressurised or liquified gas. USP20180910072960.
  8. Lenormand, Roland; Chaput, Christophe. Capacitive probe for measuring the level of an electricity-conducting liquid in a vessel. USP2003056563328.
  9. Lenormand, Roland; Chaput, Christophe. Capacitive probe for measuring the level of an electricity-conducting liquid in a vessel and method of manufacturing such a probe. USP2005016844743.
  10. Harald Sikora DE. Device for measuring the capacitance of electrical wires. USP2002126498499.
  11. Rauchwerger George P. (Sunnyvale CA). Guarded capacitance probe and related measurement circuit. USP1996085546005.
  12. Emplit Raymond H. (Glen Mills PA) Daily Donald Y. (Havertown PA). Level indicator control system for use with capacitance probes in tanks containing substances. USP1989044819483.
  13. Gravel James L. ; Johnson Bruce L. ; Kronmiller James A. ; Olson Randall C. ; Kruse Steven D.. Level probe with modular connection. USP2000116148681.
  14. Clark Frederic L. ; Martin Richard R. ; Moore Larry W. ; Clemens John M. ; Rumbaugh William D. ; Smith B. Jane. Liquid heater assembly with a pair temperature controlled electric heating elements and a coiled tube therebetween. USP1999095960160.
  15. Shearer, Jon Douglas; Periyathamby, Sabeshan Sean. Liquid level sensing system. USP2016029261395.
  16. Periyathamby, Sabeshan Sean; Shearer, Jon; Lei, Martin; Harr, John A.; Mackulin, Bryan J.. Liquid level sensing systems. USP2017029574928.
  17. Clark Frederick L. (Plano TX) Martin Richard R. (Irving TX) Moore Larry W. (Plano TX) Wohlford Robert A. (Irving TX). Meia cartridge feeder. USP1996045507410.
  18. Williams,Graham; Odedra,Raj; Cunning,Hugh; Smith,Lindsay. Method and apparatus for monitoring liquid levels within a vessel. USP2006097100441.
  19. Marki, Sarah; Cors, Nicolas; Struchen, Thomas. Method of device for testing a capacitively operating measuring device, which is designed for the detection of phase boundaries, and correspondingly equipped laboratory apparatus. USP2015079074919.
  20. Gravel James L. ; Kruse Steve D. ; Olson Randall C.. Modular probe. USP1999095955684.
  21. Schirmacher Manfred (Bergkamen DEX). Monitoring system for the filling of containers. USP1990044915145.
  22. McCarthy, William Patrick; Perdue, Kenneth L.; Cummings, Donald D.; Wartmann, Gerd. Probe mapping diagnostic methods. USP2003056559657.
  23. Fredriksson,H��kan. Radar level gauge system and coupling. USP2008127467548.
  24. Clark Frederick L. (Plano TX) Hendrick Kendall B. (Southlake TX) Martin Richard R. (Irving TX) Moore Larry W. (Plano TX) Raymoure William J. (Lake Bluff IL) Schrier Paul R. (Carrollton TX) Walker Edn. Sample container segment assembly. USP1996115575978.
  25. Clark Frederick L. ; Hendrick Kendall B. ; Martin Richard R. ; Moore Larry W. ; Raymoure William J. ; Schrier Paul R. ; Walker Edna S. ; Walker Donny Ray ; Winter Gary E. ; Cloonan Kevin M. ; Yost Da. Sample container segment assembly. USP1998065762878.
  26. Clark Frederick L. ; Moore Larry W. ; Walker Donny Ray ; Clemens John M ; Kanewske ; III William J. ; Smith B. Jane. Sample container segment assembly. USP2001026190617.
  27. Tayi Apparao. Scheduling operation of an automated analytical system. USP2000086096561.
  28. Grieger Bernd. Sensor apparatus. USP2000096118282.
  29. Grieger Bernd D. ; Cummings Donald D.. Sensor apparatus for process measurement. USP1999115992251.
  30. Grieger Bernd D. ; Cummings Donald D.. Sensor apparatus for process measurement. USP2000026019007.
  31. Donald V. Eason. Sensor apparatus for transmitting electrical pulses from a signal line into and out of a vessel to measure a process variable-in order to be more informative. USP2002056386055.
  32. Kanjolia, Ravi; Platts, Chris; Nguyen, Nam; Wilkinson, Mark. Solid precursor delivery assemblies and related methods. USP2016039297071.
  33. Kissinger ; Jr. George Thomas. System for preventing spillage from containers during filling thereof. USP1999075927350.
  34. McDermid, John. Water measurement apparatus and methods. USP2005086925398.
  35. McDermid,John. Water measurement auto-networks. USP2008017324901.